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疊代
Author:
hnlu
GeoGebra
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球体的体积推导（优化版）
找出對稱軸
【案例】2018年全国1卷理科12题
錐體建築師
画直线等分三角形的面积
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技巧集
Percentage Change(百分變化)
梯形(面積)
test1
我的第一个GGB绘本
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Mode
Division
General Quadrilateral
Hypothesis Testing
Cylinder